Band structure from random interactions

被引:102
作者
Bijker, R
Frank, A
机构
[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca, Morelos, Mexico
关键词
D O I
10.1103/PhysRevLett.84.420
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The anharmonic vibrator and rotor regions in nuclei are investigated in the framework of the interacting boson model using an ensemble of random one- and two-body interactions. We find a predominance of L-p = 0(+) ground states, as well as strong evidence for the occurrence of both vibrational and rotational band structures. This remarkable result suggests that such band structures represent a far more general (robust) property of the collective model space than is generally thought.
引用
收藏
页码:420 / 422
页数:3
相关论文
共 17 条
[1]   Dominance of JP=0+ ground states in even-even nuclei from random two-body interactions -: art. no. 021302 [J].
Bijker, R ;
Frank, A ;
Pittel, S .
PHYSICAL REVIEW C, 1999, 60 (02) :4
[2]   Transition from the seniority to the anharmonic vibrator regime in nuclei [J].
Bijker, R ;
Frank, A ;
Pittel, S .
PHYSICAL REVIEW C, 1997, 55 (02) :R585-R587
[3]   2-BODY RANDOM HAMILTONIAN AND LEVEL DENSITY [J].
BOHIGAS, O ;
FLORES, J .
PHYSICS LETTERS B, 1971, B 34 (04) :261-&
[4]   Phase transitions in finite nuclei and the integer nucleon number problem [J].
Casten, RF ;
Kusnezov, D ;
Zamfir, NV .
PHYSICAL REVIEW LETTERS, 1999, 82 (25) :5000-5003
[5]   UNIVERSAL ANHARMONIC VIBRATOR DESCRIPTION OF NUCLEI AND CRITICAL NUCLEAR-PHASE TRANSITIONS [J].
CASTEN, RF ;
ZAMFIR, NV ;
BRENNER, DS .
PHYSICAL REVIEW LETTERS, 1993, 71 (02) :227-230
[6]   CLASSICAL LIMIT OF THE INTERACTING-BOSON MODEL [J].
DIEPERINK, AEL ;
SCHOLTEN, O ;
IACHELLO, F .
PHYSICAL REVIEW LETTERS, 1980, 44 (26) :1747-1750
[7]   VALIDITY OF RANDOM MATRIX THEORIES FOR MANY-PARTICLE SYSTEMS [J].
FRENCH, JB ;
WONG, SSM .
PHYSICS LETTERS B, 1970, B 33 (07) :449-&
[8]   RELATIONSHIP BETWEEN THE BOHR COLLECTIVE HAMILTONIAN AND THE INTERACTING-BOSON MODEL [J].
GINOCCHIO, JN ;
KIRSON, MW .
PHYSICAL REVIEW LETTERS, 1980, 44 (26) :1744-1747
[9]   Phase coexistence in transitional nuclei and the interacting-boson model [J].
Iachello, F ;
Zamfir, NV ;
Casten, RF .
PHYSICAL REVIEW LETTERS, 1998, 81 (06) :1191-1194
[10]  
Iachello F., 1987, Cambridge Monographs on Mathematical Physics